Had a minor breakdown at the mall

Two days ago I stopped at the mall to get advanced tickets for Thor (yes I am a nerd, deal with it), and I decided to stop at a couple lingerie stores to pick out something to wear under my wedding dress.  I wanted something nice and sexy so I stopped at La Vie en Rose.  Well the largest band size they have is 38.  I currently wear a 40 C ( just in case you were wondering my bra size), but I have lost almost 20 lbs and my bra has been a little loose so I thought I may be able to squeeze into a 38.  WRONG, it didn't even come close to doing up and I don't know why but it really bothered me.  I almost started crying right then and there. 
I didn't cry, instead I decided to try La Senza, I was sure that I had bought bras from them in the past.  I wandered around their store for a while and couldn't find anything larger than a 38.  Eventually one of the store's employees asked if I need help finding anything and I asked if they carried 40C.  She said "I'm sorry we stopped carrying 40 bands"
I don't know why but this just made me go over the edge.  I said "I guess fat girls don't deserve nice underwear" and I stormed out.  Not exactly a rational reaction.  I then started bawling all the way to my car.  I really don't know why I reacted like that.  I could have just gone over to Sears and found something in my size.  Plus I have a wide upper back, I always have.  I am used to having to go to a slightly larger size so things will fit me properly.  I have many shirts that fit me perfect in the stomach but are way too tight in the chest area, that's just the way it is.
I think what bothered me is the fact that so many stores don't carry plus size, yet there is no plus size lingerie in the mall.  Lets face it most women are not a size 4, yet many stores stock their shelves as if they are.  Why not stock sizes that women can actually wear.  Would ordering a couple plus size bras really take up that much room.  I am sure they would sell so it's not like the stores would lose money on them.
Bah, thinking about it has gotten me all riled up again.